PROCESS FOR REMOVING SULFUR OXIDES AND/OR NITROGEN OXIDES FROM WASTE GAS

摘要

IMPROVEMENTS IN OR RELATING TO PROCESS FOR REMOVING SULFUR OXIDES AND/OR NITROGEN OXIDES FROM WASTE GAS Sulfur oxides and/or nitrogen oxides are removed from waste gas containing the same by adding chlorine dioxide or ozone gas to the waste gas in case where nitrogen monoxide is contained in the waste gas, and by scrubbing the waste gas with an aqueous scrubbing solution containing the sulfite of alkali metals or ammonium and oxidation retardant consisting of the sulfide, polysulfide or thiosulfate, of alkali metals or ammonium and thiourea.